<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt"><div><span></span></div><div></div><div>Hugh</div><div><br></div><div>Sounds like you have your hands full trying to work through these system issues. Aren't prototypes fun! Hang in there. I see light at the end of the tunnel.</div><div><br></div><div>Regards</div><div><br></div><div>Cliff<br></div><div><br></div><div><br></div> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div dir="ltr"> <div class="hr" style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); border-image: none; height: 0px; line-height: 0; font-size: 0px;" contenteditable="false"
readonly="true"></div> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> Hugh Fulton via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, July 20, 2014 4:08 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] O2 regulator<br> </font> </div> <div class="y_msg_container"><br><div id="yiv6273089351"><style>#yiv6273089351 #yiv6273089351 --
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#yiv6273089351 </style><div><div class="yiv6273089351WordSection1"><div class="yiv6273089351MsoNormal"><span style="font-size: 11pt;">Hi Cliff, IF you had been taking your sub I would have made the effort to come across. Q-Sub!! Batteries!! Trying to get them sorted and I am on my 3<sup>rd</sup> lot and it has not been in the water. Biggest problem is I got them too early and they have not been cycled regularly.</span></div><div class="yiv6273089351MsoNormal"><span style="font-size: 11pt;">2<sup>nd</sup> problem is the gearbox. I contacted Mercruiser agent and asked which direction did the driveshaft have to go before I made the gearboxes. He told me I could run it either way. I belaboured the point to make sure as I said I could do a gearbox to go either way. Trouble is I did not get it in writing. Now after testing and pulling the top off I found I have to redesign and remake two gearboxes to
give same direction in as out. That really taught me a lesson as well as making me angry as hell. Also had a Kelly BLDC motor controller fall over and trying to get it fixed. A few minor issues with wiring and controls which I expected. I have done some nice LED lights 150 watt which are 2<sup>nd</sup> generation but are good to go. They get a bit hot in air after 15 minutes but all good in water. Had some problems with the engines as I had taken a feed off the crank sensor. Took that off and they ran sweetly. Hydraulics needed pump changing out for a smaller one. Again supplier fault. Getting there but as you say, complexity = extended time. All-a-same-engineering, Boss!!</span></div><div class="yiv6273089351MsoNormal"><span style="font-size: 11pt;"> </span></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 11pt;">Kind regards, Hugh </span><span lang="EN-NZ"
style="font-size: 11pt;"></span></div><div class="yiv6273089351MsoNormal"><span lang="EN-NZ" style="font-size: 11pt;"> </span></div></div><div class="yiv6273089351MsoNormal"><span style="font-size: 11pt;"> </span></div><div class="qtdSeparateBR"><br><br></div><div class="yiv6273089351yqt3370798010" id="yiv6273089351yqt30888"><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentColor currentColor; padding: 3pt 0cm 0cm; border-image: none;"><div class="yiv6273089351MsoNormal"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>Cliff Redus via Personal_Submersibles<br clear="none"><b>Sent:</b> Monday, 21 July 2014 1:45 a.m.<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] O2
regulator</span></div></div></div><div class="yiv6273089351MsoNormal"> </div><div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>Good point about the ABS increasing the CO2 limit for scrubber change out and emergency lift support situations. I still prefer to have higher resolution of the measurement for normal operating conditions so I will stick wit my 1% sensor. If you install a 5% sensor and find out you are not happy after using it awhile, the nice part about using a PLC is it is easy to change a few rungs of ladder logic and install a different sensor. </span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>Sounds like you are having second thoughts on casting an aluminum hull. If you went with ABS rule, you would end up having to do a lot of imperial
testing of the hull meet their classing rules. Thy like and understand steel weldments!</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>When I last saw the Q-Sub which was several years ago, it had its exostructure off. There a lot of systems on the boat. Added systems means added complexity which means a longer time to sort eve thing out. But "I agree, when she finally gets commissioned, she will be awesome!</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>Cliff</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div></div><div><div class="yiv6273089351MsoNormal" style="background:
white;"><span> </span></div></div><div><div><div><div class="yiv6273089351MsoNormal" style="background: white;"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"><b>To:</b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"><b>Sent:</b> Saturday, July 19, 2014 10:59 PM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] O2 regulator</span><span></span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div><div
id="yiv6273089351"><div><div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span style="font-size: 10pt;">Hi Cliff,</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">The graphs on your plc sound a great idea. Good way to monitor things.</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">With G.L. the accuracy you get on the 0-50,000ppm (5%) unit is fine.</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">They require an accuracy of + or - 0.001 bar CO2 partial pressure. That is 1000ppm.</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;"> ABS does say 0.5% by volume limit, but it lets you go up to 1% during a scrubber change over,</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">& 1.5% for emergency life support
situations.</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">I like the 0-50,000 unit for peace of mind, in case you did get in an emergency situation & the CO2</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">level went beyond 10,000ppm. On the <span class="yiv6273089351">pdf</span> for the higher range units it says that the minimum operating</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">pressure is .950 - 40 bar. So I guess you would need to monitor the cabin pressure with alarms to ensure you didn't</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">go below the minimum it functioned at. I couldn't see any pressure operating range specified with your unit.</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;"> I'm not sure where I'm at
with the <span class="yiv6273089351">aluminum</span> pressure hull idea. <span class="yiv6273089351">Gas</span> bubbles formed in the casting process</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">are hard to control. G.L. doesn't like <span class="yiv6273089351">aluminum</span> as a pressure vessel, & it's more subject to galvanic corrosion than</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">steel. Also if I wanted it hard anodized I would have to do it outside N.Z. as there are no tanks big enough here.</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">There are ASME rules for cast <span class="yiv6273089351">aluminum</span> pressure vessels, but I haven't got hold of them yet. (anyone own them??)</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">Phil made one of his Newt suits out of
cast <span class="yiv6273089351">aluminum</span>; so hopefully I can pick his brains on this in August.</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;"> Don't you love the flight down here. Hope you sleep well on planes. </span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;"> I caught up with Hugh last week & some of the exostructure was off his Q-sub. When you see it like that you can</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">appreciate the enormous amount of engineering work gone in to it. I think Hugh is well & truly over it with all the problems</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">but it's going to be awesome when he get's it diving.</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">Have a good trip to
OZ.</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;">Alan</span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;"> </span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;"> </span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;"> </span></div></div><div><div class="yiv6273089351MsoNormal"><span style="font-size: 10pt;"> </span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span style="font-size: 10pt;"> </span></div></div><div><div><div><div class="yiv6273089351MsoNormal" style="background: white; margin-bottom: 12pt;"><span> </span></div></div><div id="yiv6273089351yqt56381"><div><div class="yiv6273089351MsoNormal" style="background: white;"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Cliff Redus via
Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"><b>To:</b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"><b>Sent:</b> Sunday, July 20, 2014 8:57 AM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] O2 regulator</span><span></span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div><div id="yiv6273089351"><div><div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>Alan</span></div></div><div><div class="yiv6273089351MsoNormal"><span> </span></div></div><div><div class="yiv6273089351MsoNormal"><span>From
a Navy document on CO2 they describe the physiological impact of CO2 in the atmosphere:</span></div></div><div><div class="yiv6273089351MsoNormal"><span> </span></div></div><div><div class="yiv6273089351MsoNormal"><span>2-3% Shortness of breath deep breathing</span></div></div><div><div class="yiv6273089351MsoNormal"><span>5% Breathing becomes heavy, sweating, pulse quickens</span></div></div><div><div class="yiv6273089351MsoNormal"><span>7.5% Headaches, dizziness, restlessness, breathlessness, increased heart rate and blood pressure, visual distortion</span></div></div><div><div class="yiv6273089351MsoNormal"><span>10% Impaired hearing, nausea, vomiting, loss of consciousness</span></div></div><div><div class="yiv6273089351MsoNormal"><span>30% Coma, convulsions, death</span></div></div><div><div class="yiv6273089351MsoNormal"><span> </span></div></div><div><div
class="yiv6273089351MsoNormal"><span> </span></div></div><div><div class="yiv6273089351MsoNormal"><span> </span></div></div><div><div class="yiv6273089351MsoNormal"><span>A 0-30,000 ppm (3%) or 0-50,000 (5%) sensor is fine but you loss accuracy when the span increases. These meters are typically +/- 0.5% accuracy based on the span of the meter. For a 30,000 ppm meter, this gives +/- 150 ppm. For a 10,000 ppm span, the same 0.5% accuracy meter gives you a +/- 50 ppm accuracy, or three time the resolution of the measurement. Another reason I like the 10,000 span is for my boat I am trying to stay within the 0-5000 ppm level set by ABS. Normally this sensor is reading 1000-2000 ppm. The only time is will run higher is when the CO2 absorbent become saturated and is no longer pulling CO2 out of air. So if has been 8 plus hours on one scrubber, I start to get a color change of the
absorbent and I see the CO2 ppm level start to continually increase, I know it is time to change the absorbent. My PLC touch screen has a plotting feature so I have a screen that shows the CO2 and O2 levels plotted over time. It is pretty easy to see with the absorbent become saturated.</span></div></div><div><div class="yiv6273089351MsoNormal"><span> </span></div></div><div><div class="yiv6273089351MsoNormal"><span>So the short answer is I like the better accuracy I get over the range I would expect to see.</span></div></div><div><div class="yiv6273089351MsoNormal"><span> </span></div></div><div><div class="yiv6273089351MsoNormal"><span>I am sorry to miss the convention as well. I was looking forward to hearing about the progress you have made on your new one atmosphere boat. Are you still planning on casting the pressure hull?</span></div></div><div><div class="yiv6273089351MsoNormal"><span>
</span></div></div><div><div class="yiv6273089351MsoNormal"><span>Next week I will be in your part of the world Australia; not home but close. No plans to hit New Zealand on this trip. Though I would like to see how Hugh Fulton is coming along on his QBoat</span></div></div><div><div class="yiv6273089351MsoNormal"><span> </span></div></div><div><div class="yiv6273089351MsoNormal"><span>Cliff</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white; margin-bottom: 12pt;"><span> </span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div></div><div><div><div><div class="yiv6273089351MsoNormal" style="background: white; margin-bottom: 12pt;"><span> </span></div></div><div id="yiv6273089351yqt86791"><div><div class="yiv6273089351MsoNormal"
style="background: white;"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Alan via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"><b>To:</b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"><b>Sent:</b> Saturday, July 19, 2014 3:01 PM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] O2 regulator</span><span></span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div><div id="yiv6273089351"><div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>That's a great link Cliff, have
bookmarked it.</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>I am wanting something to link to a plc & they have some treat options.</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>How come you didn't buy a unit with a wider range?</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>Phil's life support paper is saying we can take 3% for 1 hour, but the</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>range on the one you bought is 0 to 1%.</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>Sorry you aren't making it to Bellingham. It was a real treat seeing the R 300</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>in Florida.</span></div></div><div><div class="yiv6273089351MsoNormal"
style="background: white;"><span>Alan</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span><br clear="none"><br clear="none">Sent from my iPad</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white; margin-bottom: 12pt;"><span> </span></div></div><div id="yiv6273089351yqt15142"><div><div class="yiv6273089351MsoNormal" style="background: white; margin-bottom: 12pt;"><span><br clear="none">On 19/07/2014, at 12:25 pm, Cliff Redus via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span></div></div><blockquote style="margin-top: 5pt; margin-bottom: 5pt;"><div><div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>I use a K-30, part number SE-0018 , 0-10,000 ppm (0-1%) CO2 sensor from a
company CO2 meters inc. The cost is $85 and it sends a 0-5 VDC output sensor.</span></div></div><div><div class="yiv6273089351MsoNormal"><span> </span></div></div><div><div class="yiv6273089351MsoNormal"><span><a href="http://www.co2meter.com/collections/co2-sensors/products/k-30-co2-sensor-module" target="_blank" rel="nofollow" shape="rect">http://www.co2meter.com/collections/co2-sensors/products/k-30-co2-sensor-module</a></span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> Has worked flawlessly.</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span>Cliff</span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white; margin-bottom: 12pt;"><span><br clear="none"><br clear="none"><br clear="none"></span></div></div><div><div
class="yiv6273089351MsoNormal" style="background: white;"><span><br clear="none">Cliff Redus<br clear="none">Redus Engineering<br clear="none">USA mobile: 830-931-1280<br clear="none"><a href="mailto:cliffordredus@sbcglobal.com" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:cliffordredus@sbcglobal.com">cliffordredus@sbcglobal.com</a> </span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span> </span></div></div><div><div><div><div class="yiv6273089351MsoNormal" style="background: white;"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Pete Niedermayr via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"><b>To:</b> Personal Submersibles General Discussion <<a
href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"><b>Sent:</b> Friday, July 18, 2014 7:05 PM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] O2 regulator</span><span></span></div></div><div><div class="yiv6273089351MsoNormal" style="background: white;"><span><br clear="none"><br clear="none">Cliff, What are you using for a CO2 sensor?<br clear="none"><br clear="none">Thanks Pete<br clear="none"><br clear="none">--------------------------------------------<br clear="none">On Thu, 7/17/14, Cliff Redus via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none">Subject: Re: [PSUBS-MAILIST] O2 regulator<br
clear="none">To: "Personal Submersibles General Discussion" <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">Date: Thursday, July 17, 2014, 8:30 AM<br clear="none"><br clear="none">Hank<br clear="none">On the R300, I have life support<br clear="none">module I call the AMOC system (Air monitoring and Oxygen<br clear="none">Control). Connected to the box is a 1/4" SS tubing<br clear="none">with Swagelok fittings connected to a O2 supply from an<br clear="none">external 2200 psig O2 bottle. I fill this with welding O2<br clear="none">with a whip. In the AMOC module is a medical pressure<br clear="none">reducing regulator (Hudson model 2000). This regulator <br clear="none">reduces the pressure to around 5 psig. The pressure<br clear="none">downstream of the
regulator is adjustable with a maximum<br clear="none">rate of 15 SLPM. The porting on this regulator is two<br clear="none">1/4" NPT HP ports and one LP port. Downstream of<br clear="none">this regulator, I have installed an O2 thermal mass meter/<br clear="none">controller from Porter. <br clear="none"> The model number is 201-FSVP. This controller can be set<br clear="none">from 0-10 SLPM via an 0-5V analog input signal. Max<br clear="none">pressure on the O2 controller is 25 psig. This O2<br clear="none">controller also sends out at 0-5V analog output signal of<br clear="none">the O2 SLPM flow rate.<br clear="none">Both these items were purchased on<br clear="none">Ebay at a fraction of list. I have been very happy<br clear="none">with the performance of these units. By measuring the O2<br clear="none">and CO2 percentages in the cabin, I have a PLC that opens<br
clear="none">and closes this controller to keep the cabin O2 % between<br clear="none">19-22%. ABS regulations requires that the O2 be held with<br clear="none">in 18-24%. The advantage of this system is that it<br clear="none">automatically accounts for different metabolic consumptions<br clear="none">rates for O2. In the AMOC unit, I have a Swagelok needle<br clear="none">valve in a bypass around this controller so that if both<br clear="none">main and back up power are lost, the pilot can manually<br clear="none">adjust the O2 rate<br clear="none"> into the boat.<br clear="none">The<br clear="none">second part to controlling the atmosphere in the cabin is<br clear="none">scrubbing the CO2. I initially used a axial flow filter<br clear="none">with SodaSorb HP. I found that the axial flow filter did<br clear="none">not work very well with CO2 in the cabin ranging from 0-7000<br clear="none">ppm.
Part of the problem was the axial filter arrangement<br clear="none">and part of the problem was the blower was not strong<br clear="none">enough. At the 2012 PSUB convention in Vancouver, Alec<br clear="none">Symth brought the scrubber he was using on Snoopy as a<br clear="none">show and tell. His scrubber is an OTS radial filter that<br clear="none">is used to clean air. In 2013, I switch to this type of<br clear="none">scrubber/filer again with SodaSorb HB and the scrubber has<br clear="none">worked much better. It consistently keeps the CO2 level<br clear="none">below 2000 ppm with most of the time it being 1000-1500<br clear="none">ppm. ABS rules require that you keep O2 concentration<br clear="none">below 5000 ppm. Part of the reason that is works better<br clear="none"> is the radial design which minimizes the pressure drop<br clear="none">through the Sodasorb and part is that I have
switched to a<br clear="none">stronger blower.<br clear="none">Long<br clear="none">answer to short question.<br clear="none"><br clear="none">Cliff<br clear="none"><br clear="none"><br clear="none"><br clear="none"> <br clear="none"><br clear="none"> On Thursday, July 17, 2014 9:27 AM,<br clear="none">hank pronk via Personal_Submersibles<br clear="none"><<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"> <br clear="none"><br clear="none"> Hi All,I need to find a pediatric<br clear="none">flow meter and regulator for Gamma. Or is there something<br clear="none">better?Hank<br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a
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